diff --git a/mod_php_install.sh b/mod_php_install.sh
index 39cf545..b3cb821 100755
--- a/mod_php_install.sh
+++ b/mod_php_install.sh
@@ -60,6 +60,15 @@ else
    DEFAULT_OPCACHE_ERROR_LOG=""
 fi
 
+# Default Settings apc extension
+#
+DEFAULT_APC_ENABLE_CLI=1
+DEFAULT_APC_SHM_SIZE="32M"
+DEFAULT_APC_STAT=1
+DEFAULT_APCU_STAT=1
+DEFAULT_APC_BY_DEFAULT=1
+DEFAULT_APC_SMART=0
+
 _SKIP_UPDATE_DB=yes
 
 _CRONTAB_BAKUP_FILE="$(mktemp)"
@@ -1393,6 +1402,273 @@ if [[ "$OPCACHE_ERROR_LOG" = "OTHER" ]]; then
 fi
 
 
+echo ""
+echo ""
+echo -e "\033[32m--\033[m"
+echo -e "\033[1mDefine Parameters for 'apcu' extension\033[m"
+echo -e "\033[32m--\033[m"
+
+
+# - php.ini - apcu extension: apc.enable_cli
+_key="apc.enable_cli"
+_default_val=$DEFAULT_APC_ENABLE_CLI
+if [ -f "/usr/local/php-${PHP_MAIN_VERSION}/etc/php.ini" ]; then
+   _APC_ENABLE_CLI=$(grep -e "^\s*${_key}/s*=" /usr/local/php-${PHP_MAIN_VERSION}/etc/php.ini | awk '{print$3}')
+fi
+[[ -z "$_APC_ENABLE_CLI" ]] && _APC_ENABLE_CLI=$_default_val
+
+
+echo ""
+echo ""
+echo -e "Set value for Parameter \033[32m${_key}\033[m (bool)"
+echo ""
+echo "   Enables the CLI of the 'apcu' extension. "
+echo ""
+APC_ENABLE_CLI=""
+while [[ "X$APC_ENABLE_CLI" = "X" ]]; do
+   echononl "${_key} [$_APC_ENABLE_CLI]: "
+   read APC_ENABLE_CLI
+   if [ "X$APC_ENABLE_CLI" = "X" ]; then
+      APC_ENABLE_CLI=$_APC_ENABLE_CLI
+      continue
+   fi
+   if [[ "${APC_ENABLE_CLI}" != 0 ]] \
+         && [[ "${APC_ENABLE_CLI,,}" != "no" ]] \
+         && [[ "${APC_ENABLE_CLI,,}" != "false" ]] \
+         && [[ "${APC_ENABLE_CLI}" != 1 ]] \
+         && [[ "${APC_ENABLE_CLI,,}" != "yes" ]] \
+         && [[ "${APC_ENABLE_CLI,,}" != "true" ]] ; then
+      APC_ENABLE_CLI=""
+      warn "Value for '${_key}' must be bool [1/0/true/false/yes/no]."
+      continue
+   fi
+   echo ""
+   echo "APC_ENABLE_CLI:  $APC_ENABLE_CLI"
+   echo "APC_ENABLE_CLI:  ${APC_ENABLE_CLI,,}"
+   echo ""
+   if  [[ "${APC_ENABLE_CLI,,}" = "no" ]] \
+          || [[ "${APC_ENABLE_CLI,,}" = "false" ]]; then
+      APC_ENABLE_CLI=0
+   elif  [[ "${APC_ENABLE_CLI,,}" = "yes" ]] \
+             || [[ "${APC_ENABLE_CLI,,}" = "true" ]]; then
+      APC_ENABLE_CLI=1
+   fi
+done
+
+# - php.ini - apcu extension: apc.shm_size
+_key="apc.shm_size"
+_default_val=$DEFAULT_APC_SHM_SIZE
+if [ -f "/usr/local/php-${PHP_MAIN_VERSION}/etc/php.ini" ]; then
+   _APC_SHM_SIZE=$(grep -e "^\s*${_key}" /usr/local/php-${PHP_MAIN_VERSION}/etc/php.ini | awk '{print$3}')
+fi
+[[ -z "$_APC_SHM_SIZE" ]] && _APC_SHM_SIZE=$_default_val
+
+echo ""
+echo ""
+echo -e "Set value for Parameter \033[32m${_key}\033[m (int - in megabytes)"
+echo ""
+echo "   The size of the shared memory storage used by apcu, in megabytes."
+echo ""
+APC_SHM_SIZE=""
+while [[ "X$APC_SHM_SIZE" = "X" ]]; do
+   echononl "${_key} [$_APC_SHM_SIZE]: "
+   read APC_SHM_SIZE
+   if [ "X$APC_SHM_SIZE" = "X" ]; then
+      APC_SHM_SIZE=$_APC_SHM_SIZE
+   fi
+   if is_int $APC_SHM_SIZE ; then
+      APC_SHM_SIZE="${APC_SHM_SIZE}M"
+      warn "No unit is given. \"M\" was appended: APC_SHM_SIZE: $APC_SHM_SIZE"
+      continue
+   fi
+   _unit="${APC_SHM_SIZE: -1}"
+   if [[ "$_unit" != "K" ]] && [[ "$_unit" != "M" ]] && [[ "$_unit" != "G" ]]; then
+      warn "Wrong unit was given for APC_SHM_SIZE. Reenter again"
+      APC_SHM_SIZE=""
+      continue
+   fi
+   if ! is_int ${APC_SHM_SIZE::-1} ; then
+      warn "Wrong value for APC_SHM_SIZE. was given. Reenter again"
+      APC_SHM_SIZE=""
+   fi
+done
+
+
+# - php.ini - apcu extension: apc.stat
+_key="apc.stat"
+_default_val=$DEFAULT_APC_STAT
+if [ -f "/usr/local/php-${PHP_MAIN_VERSION}/etc/php.ini" ]; then
+   _APC_STAT=$(grep -e "^\s*${_key}/s*=" /usr/local/php-${PHP_MAIN_VERSION}/etc/php.ini | awk '{print$3}')
+fi
+[[ -z "$_APC_STAT" ]] && _APC_STAT=$_default_val
+
+echo ""
+echo ""
+echo -e "Set value for Parameter \033[32m${_key}\033[m (bool)"
+echo ""
+APC_STAT=""
+while [[ "X$APC_STAT" = "X" ]]; do
+   echononl "${_key} [$_APC_STAT]: "
+   read APC_STAT
+   if [ "X$APC_STAT" = "X" ]; then
+      APC_STAT=$_APC_STAT
+      continue
+   fi
+   if [[ "${APC_STAT}" != 0 ]] \
+         && [[ "${APC_STAT,,}" != "no" ]] \
+         && [[ "${APC_STAT,,}" != "false" ]] \
+         && [[ "${APC_STAT}" != 1 ]] \
+         && [[ "${APC_STAT,,}" != "yes" ]] \
+         && [[ "${APC_STAT,,}" != "true" ]] ; then
+      APC_STAT=""
+      warn "Value for '${_key}' must be bool [1/0/true/false/yes/no]."
+      continue
+   fi
+   echo ""
+   echo "APC_STAT:  $APC_STAT"
+   echo "APC_STAT:  ${APC_STAT,,}"
+   echo ""
+   if  [[ "${APC_STAT,,}" = "no" ]] \
+          || [[ "${APC_STAT,,}" = "false" ]]; then
+      APC_STAT=0
+   elif  [[ "${APC_STAT,,}" = "yes" ]] \
+             || [[ "${APC_STAT,,}" = "true" ]]; then
+      APC_STAT=1
+   fi
+done
+
+
+# - php.ini - apcu extension: apcu.stat
+_key="apcu.stat"
+_default_val=$DEFAULT_APCU_STAT
+if [ -f "/usr/local/php-${PHP_MAIN_VERSION}/etc/php.ini" ]; then
+   _APCU_STAT=$(grep -e "^\s*${_key}/s*=" /usr/local/php-${PHP_MAIN_VERSION}/etc/php.ini | awk '{print$3}')
+fi
+[[ -z "$_APCU_STAT" ]] && _APCU_STAT=$_default_val
+
+echo ""
+echo ""
+echo -e "Set value for Parameter \033[32m${_key}\033[m (bool)"
+echo ""
+APCU_STAT=""
+while [[ "X$APCU_STAT" = "X" ]]; do
+   echononl "${_key} [$_APCU_STAT]: "
+   read APCU_STAT
+   if [ "X$APCU_STAT" = "X" ]; then
+      APCU_STAT=$_APCU_STAT
+      continue
+   fi
+   if [[ "${APCU_STAT}" != 0 ]] \
+         && [[ "${APCU_STAT,,}" != "no" ]] \
+         && [[ "${APCU_STAT,,}" != "false" ]] \
+         && [[ "${APCU_STAT}" != 1 ]] \
+         && [[ "${APCU_STAT,,}" != "yes" ]] \
+         && [[ "${APCU_STAT,,}" != "true" ]] ; then
+      APCU_STAT=""
+      warn "Value for '${_key}' must be bool [1/0/true/false/yes/no]."
+      continue
+   fi
+   echo ""
+   echo "APCU_STAT:  $APCU_STAT"
+   echo "APCU_STAT:  ${APCU_STAT,,}"
+   echo ""
+   if  [[ "${APCU_STAT,,}" = "no" ]] \
+          || [[ "${APCU_STAT,,}" = "false" ]]; then
+      APCU_STAT=0
+   elif  [[ "${APCU_STAT,,}" = "yes" ]] \
+             || [[ "${APCU_STAT,,}" = "true" ]]; then
+      APCU_STAT=1
+   fi
+done
+
+
+# - php.ini - apcu extension: apc.cache_by_default
+_key="apc.cache_by_default"
+_default_val=$DEFAULT_APC_BY_DEFAULT
+if [ -f "/usr/local/php-${PHP_MAIN_VERSION}/etc/php.ini" ]; then
+   _APC_BY_DEFAULT=$(grep -e "^\s*${_key}/s*=" /usr/local/php-${PHP_MAIN_VERSION}/etc/php.ini | awk '{print$3}')
+fi
+[[ -z "$_APC_BY_DEFAULT" ]] && _APC_BY_DEFAULT=$_default_val
+
+echo ""
+echo ""
+echo -e "Set value for Parameter \033[32m${_key}\033[m (bool)"
+echo ""
+APC_BY_DEFAULT=""
+while [[ "X$APC_BY_DEFAULT" = "X" ]]; do
+   echononl "${_key} [$_APC_BY_DEFAULT]: "
+   read APC_BY_DEFAULT
+   if [ "X$APC_BY_DEFAULT" = "X" ]; then
+      APC_BY_DEFAULT=$_APC_BY_DEFAULT
+      continue
+   fi
+   if [[ "${APC_BY_DEFAULT}" != 0 ]] \
+         && [[ "${APC_BY_DEFAULT,,}" != "no" ]] \
+         && [[ "${APC_BY_DEFAULT,,}" != "false" ]] \
+         && [[ "${APC_BY_DEFAULT}" != 1 ]] \
+         && [[ "${APC_BY_DEFAULT,,}" != "yes" ]] \
+         && [[ "${APC_BY_DEFAULT,,}" != "true" ]] ; then
+      APC_BY_DEFAULT=""
+      warn "Value for '${_key}' must be bool [1/0/true/false/yes/no]."
+      continue
+   fi
+   echo ""
+   echo "APC_BY_DEFAULT:  $APC_BY_DEFAULT"
+   echo "APC_BY_DEFAULT:  ${APC_BY_DEFAULT,,}"
+   echo ""
+   if  [[ "${APC_BY_DEFAULT,,}" = "no" ]] \
+          || [[ "${APC_BY_DEFAULT,,}" = "false" ]]; then
+      APC_BY_DEFAULT=0
+   elif  [[ "${APC_BY_DEFAULT,,}" = "yes" ]] \
+             || [[ "${APC_BY_DEFAULT,,}" = "true" ]]; then
+      APC_BY_DEFAULT=1
+   fi
+done
+
+
+# - php.ini - apcu extension: apc.smart
+_key="apc.smart"
+_default_val=$DEFAULT_APC_SMART
+if [ -f "/usr/local/php-${PHP_MAIN_VERSION}/etc/php.ini" ]; then
+   _APC_SMART=$(grep -e "^\s*${_key}/s*=" /usr/local/php-${PHP_MAIN_VERSION}/etc/php.ini | awk '{print$3}')
+fi
+[[ -z "$_APC_SMART" ]] && _APC_SMART=$_default_val
+
+echo ""
+echo ""
+echo -e "Set value ${_key}\033[32m${_key}\033[m (bool)"
+echo ""
+APC_SMART=""
+while [[ "X$APC_SMART" = "X" ]]; do
+   echononl "${_key} [$_APC_SMART]: "
+   read APC_SMART
+   if [ "X$APC_SMART" = "X" ]; then
+      APC_SMART=$_APC_SMART
+      continue
+   fi
+   if [[ "${APC_SMART}" != 0 ]] \
+         && [[ "${APC_SMART,,}" != "no" ]] \
+         && [[ "${APC_SMART,,}" != "false" ]] \
+         && [[ "${APC_SMART}" != 1 ]] \
+         && [[ "${APC_SMART,,}" != "yes" ]] \
+         && [[ "${APC_SMART,,}" != "true" ]] ; then
+      APC_SMART=""
+      warn "Value for '${_key}' must be bool [1/0/true/false/yes/no]."
+      continue
+   fi
+   echo ""
+   echo "APC_SMART:  $APC_SMART"
+   echo "APC_SMART:  ${APC_SMART,,}"
+   echo ""
+   if  [[ "${APC_SMART,,}" = "no" ]] \
+          || [[ "${APC_SMART,,}" = "false" ]]; then
+      APC_SMART=0
+   elif  [[ "${APC_SMART,,}" = "yes" ]] \
+             || [[ "${APC_SMART,,}" = "true" ]]; then
+      APC_SMART=1
+   fi
+done
+
 
 echo ""
 echo ""
@@ -1760,6 +2036,14 @@ echo "   opcache.consistency_checks........: $OPCACHE_CONSISTENCY_CHECKS"
 echo "   opcache.revalidate_freq...........: $OPCACHE_REVALIDATE_FREQ"
 echo "   opcache.error_log.................: $OPCACHE_ERROR_LOG"
 echo ""
+echo "Parameters for 'apcu' extension"
+echo "   apc.enable_cli....................: $APC_ENABLE_CLI"
+echo "   apc.shm_size......................: $APC_SHM_SIZE"
+echo "   apc.stat..........................; $APC_STAT"
+echo "   apcu.stat.........................; $APCU_STAT"
+echo "   apc.cache_by_default..............; $APC_BY_DEFAULT"
+echo "   apc.smart.........................: $APC_SMART"
+echo ""
 echo "Apache User..........................: $HTTPD_USER"
 echo "Apache Group.........................: $HTTPD_GROUP"
 echo ""
@@ -4866,19 +5150,19 @@ else
       # Add to php.ini
       #
       #   extension=apcu.so
-      #   apc.enable_cli = 1
-      #   apc.shm_size = 128M
-      #   apc.stat = 1
-      #   apcu.stat = 1
-      #   apc.cache_by_default = 1
-      #   apc.smart = 0
+      #   apc.enable_cli = $APC_ENABLE_CLI
+      #   apc.shm_size = $APC_SHM_SIZE
+      #   apc.stat = $APC_STAT
+      #   apcu.stat = $APCU_STAT
+      #   apc.cache_by_default = $APC_BY_DEFAULT
+      #   apc.smart = $APC_SMART
       #
       echononl "\tphp.ini: extension=apcu .."
       _extension="apcu.so"
       echo "" >> ${_logdir}/pecl_install.log
       echo "# php.ini: extension=apcu .." >> ${_logdir}/pecl_install.log
       echo "perl -i -n -p -e \"s#^(\s*\[PHP\]\s*)#\1\nextension=${_extension}\napc.enable_cli = 1\n#\" $PHP_INI_FILE" >> ${_logdir}/pecl_install.log
-      perl -i -n -p -e "s#^(\s*\[PHP\]\s*)#\1\nextension=${_extension}\napc.enable_cli = 1\napc.shm_size = 128M\napc.stat = 1\napcu.stat = 1\napc.cache_by_default = 1\napc.smart = 0\n#" $PHP_INI_FILE
+      perl -i -n -p -e "s#^(\s*\[PHP\]\s*)#\1\nextension=${_extension}\napc.enable_cli = ${APC_ENABLE_CLI}\napc.shm_size = ${APC_SHM_SIZE}\napc.stat = ${APC_STAT}\napcu.stat = ${APCU_STAT}\napc.cache_by_default = ${APC_BY_DEFAULT}\napc.smart = ${APC_SMART}\n#" $PHP_INI_FILE
       if [ "$?" = "0" ]; then
          echo_ok
       else